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May heavy neutrinos solve underground and cosmic-ray puzzles?

  • Elementary Particles and Fields
  • Theory
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Abstract

Primordial heavy neutrinos of the fourth generation might explain different astrophysical puzzles. The simplest fourth-neutrino scenario is consistent with known fourth-neutrino physics, cosmic ray antimatter, cosmic gamma fluxes, and positive signals in underground detectors for a very narrow neutrino mass window (46–47 GeV). However, accounting for the constraint of underground experiment CDMS prohibits solution of cosmic-ray puzzles in this scenario. We have analyzed extended heavy-neutrino models related to the clumpiness of neutrino density, new interactions in heavy-neutrino annihilation, neutrino asymmetry, and neutrino decay. We found that, in these models, the cosmic-ray imprint may fit the positive underground signals in DAMA/Nal experiment in the entire mass range 46–70 GeV allowed from uncertainties of electroweak parameters, while satisfaction of the CDMS constraint reduces the mass range to around 50 GeV, where all data can come to consent in the framework of the considered hypothesis.

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Authors and Affiliations

  1. Moscow Engineering Physics Institute, Moscow, Russia

    K. M. Belotsky & M. Yu. Khlopov

  2. Center for Cosmoparticle Physics Cosmion of Keldysh Institute of Applied Mathematics, Moscow, Russia

    K. M. Belotsky

  3. Universita’ di Roma La Sapienza and INFN, Roma, Italy

    D. Fargion

  4. INFN, Rome1, Roma, Italy

    D. Fargion

  5. New York University, New York, USA

    R. V. Konoplich

  6. Manhattan College, Riverdale, New York, USA

    R. V. Konoplich

Authors
  1. K. M. Belotsky
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  2. D. Fargion
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  3. M. Yu. Khlopov
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  4. R. V. Konoplich
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Correspondence to K. M. Belotsky.

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The text was submitted by the authors in English.

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Belotsky, K.M., Fargion, D., Khlopov, M.Y. et al. May heavy neutrinos solve underground and cosmic-ray puzzles?. Phys. Atom. Nuclei 71, 147–161 (2008). https://doi.org/10.1134/S106377880801016X

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  • DOI: https://doi.org/10.1134/S106377880801016X

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